Which point-of-sale innovation was first widely adopted in major international airports to allow passengers to make purchases without visiting physical checkout counters?

Modern transportation hubs have transformed into retail powerhouses, with innovative point-of-sale systems revolutionizing how travelers shop. From airports to train stations, these retail environments face unique challenges including space constraints, security concerns, and passengers with limited time. This trivia poll tests your knowledge about a groundbreaking POS innovation that has changed the transportation retail landscape.

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Mobile POS tablets carried by roaming staff
Self-checkout kiosks with biometric verification
Scan-and-go technology with mobile payment integration
AI-powered automated shopping carts